lanbfield



2 Sheets-Sheet 2.

J. LANGIF'IELD.

( No Model.)

GAS STOVE.

Patented June 14, 1898.

QWV M ms ATTORNEYS.

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UNITED STATEs PATENT p OFFICE.

JOI-INTLANGFIELD, or MANOHESTFR, ENGLAND.

GAS-STOVE.

SPECIFICATION forming part of Letters Patent No. 605,725, dated June 14,1898.

Application filed March 4, 1898. Serial No. 672,575, (No model.)

T0 on whom it may concern.-

Be it known that I, JOHN LANGFIELD, a subject of the Queen of GreatBritain and Ireland, residing at Manchester, in the county of Lancaster,England, have invented new and useful Improvements in Gas-Stoves, ofwhich the following is a specification.

This invention relates to improvements in gas-stoves for heating air andit consists in the combination, with a Bunsen or other suitablegas-burner, of a suitable casing divided into a hot-air chamber and aheating-chamber by a partition nearthe top, in the lower part of whichthe burneris fitted, the said chamber also being provided with air-tubescommunicating at the top of the chamber through a perforated plate withthe room or place to be supplied with hot air and at the bottom with afresh-air supply and a fine screen located Within the hot-air chamber.

The heating-chamberis also provided with.

an outlet for th'e'heated product of combustion at such a point in itsheight as to leave a considerablev column of heat, which practicallyremains at a constant temperature. The heating-chamber is also providedat the upper part with a safety-valve, so that in case of the gas beingturned on and not ignited until the mixture of air and gas in theheatingchamber becomes explosive the safety-valve will relieve thepressure in the heating-chamber and prevent bursting of the same and theissuing of flame from the stove.

My invention will be fully understood on reference to the accompanyingsheet of drawings and the following explanation thereof.

Figure 1 is a transverse vertical section; Fig. 2, a longitudinalvertical section. Fig. 3 is a horizontal section of a gas-stove madeaccording to my invention in the form which I prefer.

a is the burner.

b is a grate or. space which I prefer to provide above the burner a,filled with pieces of asbestos, rendered incandescent when the gas isalight.

c is the chamber, heated by the burner a and the incandescent asbestos.

f isa partition dividing the easing into the heating-chamber o and ahot-air chamber 9.

The air-pipes d pass from top to bottom of the chamber a, behind thefire -space, and

through the partition f, and one of the pipes 01 is shown provided witha water-pipe d, supplied with water from a small cistern 01 The water inthe pipe d is heated by the heating of the air in the corresponding pipe61.

c", Fig. l, is the outlet for products of combustion from the chamber 0,above which, it will be seen, is a considerable space for theaccumulation of a column of heat, which remains at practically aconstant temperature.

0 is ashort pipe or recess at the top of the chamber a, but extendedoutside the latter, where it is covered by a loose lid, which acts as asafety-valve in casesof explosion on first lighting the gas, as abovedescribed. By this means the fresh air supplied to the tubes d becomesheated therein and as it expands rises into the room or place to beheated, and the inner tube cl, (or tubes,) containing water, as abovedescribed, becomes (or become) highly heated by the hot air in the tube61 (which in its turn has been heated by the gas) and emits (or emit)steam into the hot air, thus moistenin g the same in the proportionrequired by the heat of the air which absorbs it.

Theair-heating chamberc may be made ornamental or fitted into a casing6, provided with tiles e, as shown, (or otherwise ornamented,) and witha gridded, perforated, or ornamental open-work top e beneath which ispreferably fitted a fine sieve or screen 6 for arresting dirt orimpurities in suspension in the heated air rising from the tubes d.

This apparatus is very applicable to the heating of small spaces, suchas greenhouses and'the like.

I claim A gas-stove consisting of a casing. having a suitable burner anda fireplace located directly above the burner, a partition near the topdividing the casing into a heating-chamber and a hot-air chamber,vertical air-heat tion of the air-heating pipes, and a safetyoutletcommunicating with the heating-cham- In testimony whereof I have signedmy name to this specification in the presence of 10 ber slightly belowthe partition and leading two subscribing Witnesses. to the outside ofthe casing, and there provided with a valve, whereby force of explosionwithin the heating-chamber will be prevented from disrupting the parts,substantially as described.

JOHN LANGFIELD.

Vitnesses:

CHARLES A. DAVIES, J NO. HUGHES.

